A174368 Primes p such that 2*p^5-+3 are also prime.

2, 727, 13267, 13693, 20533, 21863, 24043, 27697, 36877, 39227, 41957, 42293, 47087, 48593, 53887, 55763, 64763, 77617, 85247, 87803, 88793, 93997, 98323, 113983, 122453, 132967, 138433, 155443, 157457, 158303, 158747, 159553, 166823

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Example

For p=2, 2*2^5-+3=(61,67); p=727, 2*727^5-+3=(406164582184811,406164582184817).

Mathematica

Select[Prime[Range[20000]], And@@PrimeQ[2 #^5 + {3, -3}]&] (* Vincenzo Librandi, Apr 10 2013 *)

Prog

(Magma) [p: p in PrimesUpTo(200000)|IsPrime(2*p^5-3) and IsPrime(2*p^5+3)];

Crossrefs

Sequence in context: A103169 A082438 A062066 * A082621 A053600 A090275

Adjacent sequences: A174365 A174366 A174367 * A174369 A174370 A174371

Keyword

nonn,easy

Author

Vincenzo Librandi, Mar 17 2010

Status

approved